Some isolated pulse type thunderstorms that moved across the same areas in Berks County produced falsh flooding during the afternoon of the 14th.
Every event with a place to put it. Tap one for its entry below.
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS PHI wrote it up.
Some isolated pulse type thunderstorms that moved across the same areas in Berks County produced falsh flooding during the afternoon of the 14th.
The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Philadelphia/Mount Holly wrote its last area forecast discussion before the first event at Aug 14, 3:15 PM EST, 31 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 415 PM EDT THU AUG 14 2008 .SYNOPSIS... OUR AREA WILL REMAIN UNDER THE INFLUENCE OF AN UPPER LEVEL LOW PRESSURE AREA WELL INTO THE WEEKEND, AS SEVERAL DISTURBANCES CROSS THE REGION. A COLD FRONT WILL MOVE SLOWLY THROUGH THE AREA FRIDAY AND FRIDAY NIGHT. AS THE UPPER LEVEL LOW MOVES EAST OF THE AREA SUNDAY, A SURFACE HIGH PRESSURE SYSTEM WILL BUILD ACROSS THE REGION AND CONTINUE INTO EARLY NEXT WEEK. A COLD FRONT IS EXPECTED TO AFFECT THE AREA TUESDAY INTO WEDNESDAY, BUT HIGH PRESSURE IS EXPECTED TO FOLLOW FOR THE END OF NEXT WEEK. && .NEAR TERM /UNTIL 6 AM FRIDAY MORNING/... AN APPROACHING SHORT WAVE ALOFT AND TERRAIN EFFECTS HAVE COMBINED TO INITIATE SCATTERED CONVECTION OVER OUR NORTHWESTERN ZONES AT MID AFTERNOON, AS WELL AS TO AREAS JUST TO OUR WEST AND SOUTHWEST. THE MOST NUMEROUS COVERAGE THIS EVENING IS EXPECTED TO BE OVER OUR NORTHERN ZONES WHERE THE BEST LIFT AND FORCING IS LOCATED. DIURNAL EFFECTS ARE AIDING THE MODERATE INSTABILITY LATE THIS AFTERNOON AND SHOULD SUBSIDE LATER THIS EVENING, BUT AS A SURFACE COLD FRONT DRIFTS SOUTHEASTWARD INTO OUR AREA LATE TONIGHT AND EARLY FRIDAY, ADDITIONAL CONVECTION IS EXPECTED. AGAIN, THE HIGHER LIKELY PROBABILITIES WERE LEFT FOR THE NORTHERN AREAS, WITH HIGH CHANCE FURTHER SOUTH. ENHANCED WORDING WAS ADDED, ALTHOUGH REPORTS FROM MID AFTERNOON SO FAR HAVE NOT INDICATED MUCH IN THE WAY OF SEVERE WEATHER YET. WITH THE LOW FREEZING LEVEL, THE LARGEST OF ANY THREAT THIS EVENING APPEARS TO BE LARGE HAIL, BUT HEAVY RAIN COULD OCCUR IN A FEW PLACES. FLASH FLOOD GUIDANCE IS FAIRLY HIGH AT THIS TIME. WITH CONVECTION AND CLOUDS, RADIATION WILL NOT BE IDEAL TONIGHT. THE VARIOUS MOS GUIDANCE PRODUCTS WERE PRETTY CLOSE ON MINIMUM TEMPERATURES, IDENTICAL IN SOME CASES, SO THE GFS MOS WAS ACCEPTED AND USED. && .SHORT TERM /6 AM FRIDAY MORNING THROUGH SATURDAY/... WITH A SURFACE FRONT MOVING THROUGH THE AREA, COUPLED WITH THE UPPER TROUGH ROTATING THROUGH THE MID ATLANTIC REGION AND WITH GOOD INSTABILITY, NUMEROUS SHOWERS AND THUNDERSTORMS SHOULD RESULT, WITH SOME CONVECTION REACHING NEAR OR OVER SEVERE LEVELS. OUR AREA CONTINUES TO REMAIN UNDER THE CRITERIA FOR A SLIGHT RISK FOR SEVERE THUNDERSTORMS, BUT IT APPEARS TO BE CLOSE TO IT. THE RESPONSIBLE FORCING MECHANISMS APPEAR TO BE ON THEIR WAY OUT, WITH MORE STABLE AIR RESULTING, BY LATER FRIDAY NIGHT. FOR NOW, IT WAS DECIDED TO LEAVE PRECIPITATION OUT OF THE FORECAST FOR SATURDAY MORNING, BUT REINTRODUCE IT FOR SATURDAY AFTERNOON AS DIURNAL EFFECTS ACT ON THE RESIDUAL MOISTURE AND INSTABILITY ASSOCIATED WITH THE UPPER TROUGH AXIS RIGHT OVER THE AREA. MORE DIVERGENCE WAS NOTED IN MOS GUIDANCE SOLUTIONS FOR FRIDAY AND SATURDAY. WITH CLOUDS AND CONVECTION FRIDAY, AS WELL AS A SLIGHTLY COOLER WEST TO NORTHWEST FLOW SATURDAY, A BLEND OF MOS WAS USED. && .LONG TERM /SATURDAY NIGHT THROUGH THURSDAY/... THE SHARP TROUGH AXIS IS MOVED OUT OF THE AREA SATURDAY NIGHT, BUT CYCLONIC FLOW ALOFT IS STILL RETAINED BY THE MODELS SUNDAY AND MONDAY. WITH A WEST TO NORTHWEST FLOW ALOFT, AND STABILITY LIKELY REMAINING MARGINAL, ISOLATED CONVECTION ESPECIALLY OVER TERRAIN AREAS CANNOT BE RULED OUT ENTIRELY SUNDAY AND MONDAY, BUT IT WAS LEFT OUT OF THE FORECAST FOR NOW. RISING HEIGHTS COULD LEAD TO SOME WARM ADVECTION TUESDAY, BUT THERE APPEARS TO BE SOME LOW LEVEL FORCING WHICH COULD INITIATE ADDITIONAL CONVECTION, ESPECIALLY LATER TUESDAY INTO WEDNESDAY AS ANOTHER FRONT MOVES THROUGH. FOR NOW, DRY WEATHER WAS FORECAST FOR THURSDAY WITH HIGH PRESSURE FOR NOW. HPC GUIDANCE TEMPERATURES WERE USED, AND THIS AGREED ACCEPTABLY WELL WITH EXTENDED GFS MOS GUIDANCE. && .AVIATION /20Z THURSDAY THROUGH TUESDAY/... ISSUED TAFS HAVE A LOWER CONFIDENCE THAN AVERAGE FORECAST FOR THIS TAF PERIOD BECAUSE OF SCATTERED TO WIDELY SCATTERED CONVECTION EXPECTED. WHILE IN GENERAL VFR CONDITIONS ARE SHOULD PREVAIL INTO THIS EVENING, IFR CONDITIONS MIGHT OCCUR DURING ANY THUNDERSTORMS. AT THE MOMENT BEST CONFIDENCE OF THIS AFFECTING ANY TERMINAL IS KABE, WE WOULD EXPECT THE LEAST AFFECT FROM THE TSRAS AT KACY AND KMIV. THUNDERSTORMS ARE DEVELOPING OVER THE HIGHER TERRAIN WHICH MEANS THROUGH THE AFTERNOON HOURS, THE HIGHEST CHANCES OF THEM AFFECTING TERMINAL LOCATIONS WOULD BE KABE AND KRDG IN THAT ORDER. TAFS HAVE BEEN AMENDED TO INCLUDE TSRAS AT KRDG AND WE JUST AMENDED THE TAFS AROUND THE LOCAL PHILLY AREA TO TIME THE ARRIVAL OF THE CONVECTION AT OR ABOUT 22Z. AN OUTFLOW BOUNDARY OR GUST FRONT FROM THE THUNDERSTORM NEAR LONG BEACH ISLAND NJ WILL BE FOLLOWED TO SEE IF IT WILL HAVE ENOUGH ENERGY TO POSSIBLY INDUCE TSRAS EARLIER AT THE OTHER TERMINAL LOCATIONS. OTHERWISE THROUGH THE AFTERNOON A BAY BREEZE WIND SHIFT WAS INCLUDED FOR KILG AND A SEA BREEZE WIND SHIFT FOR KACY. BEST CHANCES FOR ANY TSRA ACTIVITY TO REACH THE TERMINAL REGION WILL BE DURING THE EVENING HOURS AS AN UPPER AIR DISTURBANCE OVER WESTERN PENNSYLVANIA MOVES CLOSER TO THE REGION. BELIEVE AS THE NIGHT CONTINUES THE CHANCES OF A TSRA AFFECTING ANY OF THE TERMINALS WILL DECREASE. DEW POINTS IN GENERAL ARE HIGHER THAN A COUPLE OF DAYS AGO AND WE CONTINUED TO MENTION SOME LIGHT MVFR FOG AT MOST TERMINALS OVERNIGHT. IF A TERMINAL DOES HAVE A TSRA, THE CHANCES FOR IFR CONDITIONS DUE TO MORNING FOG WILL INCREASE. WE USED THE APPROXIMATE DISSIPATION TIME OF THE FOG THIS MORNING (12Z-13Z) TO BRING BACK VFR CONDITIONS. OUTLOOK... A MORE ORGANIZED AREA OF SHOWERS AND THUNDERSTORMS IS LIKELY LATER IN THE DAY FRIDAY INTO FRIDAY EVENING. THIS COULD BRING MORE WIDESPREAD IFR CONDITIONS AS IT MOVES THROUGH ALONG WITH STRONG GUSTY WINDS AND FREQUENT LIGHTNING. THEN GENERALLY VFR CONDITIONS (OUTSIDE OF POSSIBLY SOME EARLY MORNING FOG OR HAZE) IS EXPECTED TO PERSIST INTO MONDAY WITH THE NEXT CHANCE FOR PRECIPITATION INDUCED CIG AND VSBY RESTRICTIONS ON TUESDAY. && .MARINE... SCA CONDITIONS ARE NOT EXPECTED THROUGHOUT THE FORECAST PERIOD. A PAIR OF UPPER AIR DISTURBANCES IN THE GENERAL SW FLOW ALOFT WILL HELP TRIGGER SHOWERS AND THUNDERSTORMS INTO FRIDAY NIGHT. THE SOUTHERLY FLOW PRECEDING THE TWO IMPULSES WILL START TO INCREASE SEAS OVER THE OCEAN, BUT THE SWELLS ARE EXPECTED TO REMAIN BELOW SCA CRITERIA INTO FRIDAY. SEAS SHOULD THEN SUBSIDE TOWARD THE WEEKEND AS A WEAK OFFSHORE FLOW DEVELOPS. WEAK HIGH PRESSURE BUILDING INTO THE REGION ON THE WEEKEND SHOULD PROVIDE CHAMBER OF COMMERCE CONDITIONS WITH WINDS AND SEAS WELL BELOW SCA CRITERIA. THIS SHOULD CONTINUE INTO MONDAY. THE NEXT THREAT FOR POSSIBLY ORGANIZED PRECIPITATION AS WELL AS HIGHER WINDS AND SEAS WILL BE WITH THE NEXT APPROACHING COLD FRONT TUESDAY. FOR NOW OUTSIDE OF ANY TSTMS, WINDS AND SEAS ARE EXPECTED TO REMAIN BELOW SCA CRITERIA. && .PHI WATCHES/WARNINGS/ADVISORIES... PA...NONE. NJ...NONE. DE...NONE. MD...NONE. MARINE...NONE. && SYNOPSIS... / ROBERTSON NEAR TERM... SHORT TERM... LONG TERM... AVIATION...GIGI MARINE...GIGI
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 316 PM EDT THU AUG 14 2008 DEZ001-002-MDZ008-012-015-019-020-NJZ001-007>010-012-015>019-PAZ054- 055-060>062-067>071-151915- NEW CASTLE-KENT-CECIL-KENT MD-QUEEN ANNES-TALBOT-CAROLINE-SUSSEX- WARREN-MORRIS-HUNTERDON-SOMERSET-MIDDLESEX-MERCER-SALEM-GLOUCESTER- CAMDEN-NORTHWESTERN BURLINGTON-CARBON-MONROE-BERKS-LEHIGH- NORTHAMPTON-CHESTER-MONTGOMERY-BUCKS-DELAWARE-PHILADELPHIA- 316 PM EDT THU AUG 14 2008 THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL DELAWARE...NORTHERN DELAWARE...NORTHEAST MARYLAND...CENTRAL NEW JERSEY...NORTHERN NEW JERSEY...NORTHWEST NEW JERSEY...SOUTHERN NEW JERSEY...EAST CENTRAL PENNSYLVANIA...NORTHEAST PENNSYLVANIA AND SOUTHEAST PENNSYLVANIA. .DAY ONE...THIS AFTERNOON AND TONIGHT SCATTERED THUNDERSTORMS THIS EVENING AND OVERNIGHT MAY BE STRONG, AND PRODUCE HEAVY RAIN, GUSTY WINDS, HAIL, AND DANGEROUS CLOUD TO GROUND LIGHTNING. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY NUMEROUS THUNDERSTORMS FRIDAY AND FRIDAY EVENING MAY BE STRONG, AND PRODUCE HEAVY RAIN, GUSTY WINDS, HAIL, AND DANGEROUS CLOUD TO GROUND LIGHTNING. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME. ANZ430-DEZ003-004-NJZ013-014-020>027-151915- DELAWARE BAY WATERS NORTH OF EAST POINT NJ TO SLAUGHTER BEACH DE- INLAND SUSSEX-DELAWARE BEACHES-WESTERN MONMOUTH-EASTERN MONMOUTH- OCEAN-CUMBERLAND-ATLANTIC-CAPE MAY-ATLANTIC COASTAL CAPE MAY- COASTAL ATLANTIC-COASTAL OCEAN-SOUTHEASTERN BURLINGTON- 316 PM EDT THU AUG 14 2008 THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHERN DELAWARE...DELAWARE BAY WATERS...CENTRAL NEW JERSEY AND SOUTHERN NEW JERSEY. .DAY ONE...THIS AFTERNOON AND TONIGHT SCATTERED THUNDERSTORMS ARE FORECAST FOR TONIGHT. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY NUMEROUS THUNDERSTORMS FRIDAY AND FRIDAY EVENING MAY BE STRONG, AND PRODUCE HEAVY RAIN, GUSTY WINDS, HAIL, AND DANGEROUS CLOUD TO GROUND LIGHTNING. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME. ANZ431-450>455-151915- DELAWARE BAY WATERS SOUTH OF EAST POINT NJ TO SLAUGHTER BEACH DE- COASTAL WATERS FROM SANDY HOOK TO MANASQUAN INLET NJ OUT 20 NM- COASTAL WATERS FROM MANASQUAN INLET TO LITTLE EGG INLET NJ OUT 20 NM- COASTAL WATERS FROM LITTLE EGG INLET TO GREAT EGG INLET NJ OUT 20 NM- COASTAL WATERS FROM GREAT EGG INLET TO CAPE MAY NJ OUT 20 NM- COASTAL WATERS FROM CAPE MAY NJ TO CAPE HENLOPEN DE OUT 20 NM- COASTAL WATERS FROM CAPE HENLOPEN TO FENWICK ISLAND DE OUT 20 NM- 316 PM EDT THU AUG 14 2008 THIS HAZARDOUS WEATHER OUTLOOK IS FOR ATLANTIC COASTAL WATERS AND DELAWARE BAY WATERS. .DAY ONE...THIS AFTERNOON AND TONIGHT NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY NUMEROUS THUNDERSTORMS FRIDAY AND FRIDAY EVENING MAY BE STRONG, AND PRODUCE HEAVY RAIN, GUSTY WINDS, HAIL, AND DANGEROUS CLOUD TO SURFACE LIGHTNING. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 343 PM EDT THU AUG 14 2008 MDZ008-PAZ067-142045- CECIL MD-CHESTER PA- 343 PM EDT THU AUG 14 2008 ...STRONG THUNDERSTORMS WILL AFFECT PORTIONS OF CECIL AND CHESTER COUNTIES... AT 340 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A STRONG THUNDERSTORM 20 MILES SOUTH OF LANCASTER...MOVING EAST AT 20 MPH...AND AFFECT MAINLY FAR SOUTHERN CHESTER COUNTY. ADDITIONAL STORMS WILL MOVE INTO CECIL COUNTY. VERY HEAVY RAIN WILL FALL FROM THESE STORMS...AND WILL CAUSE WATER TO POND ON ROADS AND QUICKLY FILL ROADSIDE DITCHES AND SMALL STREAMS. WIND GUSTS TO 40 MPH AND SMALL HAIL ARE POSSIBLE. EXPECT FREQUENT CLOUD TO GROUND LIGHTNING FROM THESE STORMS. DO NOT SEEK SHELTER UNDER TREES WHEN LIGHTNING THREATENS...MOVE INDOORS WHEN A THUNDERSTORM APPROACHES. REMAIN ALERT IN THE EVENT A WARNING IS ISSUED. FORECASTER: GORSE
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 349 PM EDT THU AUG 14 2008 NJZ001-008-142045- MORRIS NJ-SUSSEX NJ- 349 PM EDT THU AUG 14 2008 ...A STRONG THUNDERSTORM WILL AFFECT PORTIONS OF MORRIS AND SUSSEX COUNTIES... AT 346 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A STRONG THUNDERSTORM 8 MILES EAST OF NEWTON...MOVING EAST AT 20 MPH. THE THUNDERSTORM WILL BE NEAR LAKE TELEMARK AROUND 405 PM...GREEN POND AROUND 410 PM...KINNELON...BOONTON AROUND 425 PM...BUTLER AROUND 435 PM...PEQUANNOCK TOWNSHIP AROUND 440 PM AND LINCOLN PARK AROUND 445 PM. VERY HEAVY RAIN WILL FALL FROM THIS STORM...AND WILL CAUSE WATER TO POND ON ROADS AND QUICKLY FILL ROADSIDE DITCHES AND SMALL STREAMS. WIND GUSTS TO 40 MPH AND SMALL HAIL CAN BE EXPECTED WITH THIS STORM. CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM. DO NOT SEEK SHELTER UNDER TREES WHEN LIGHTNING THREATENS...MOVE INDOORS WHEN A THUNDERSTORM APPROACHES. FORECASTER: GORSE
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 400 PM EDT THU AUG 14 2008 PAZ060-061-142100- BERKS PA-LEHIGH PA- 400 PM EDT THU AUG 14 2008 ...A STRONG THUNDERSTORM WILL AFFECT PORTIONS OF BERKS AND LEHIGH COUNTIES... AT 358 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A STRONG THUNDERSTORM 12 MILES NORTHEAST OF READING...MOVING NORTHEAST AT 20 MPH. THIS THUNDERSTORM WILL BE NEAR TOPTON AROUND 405 PM... ALBURTIS AROUND 420 PM...ANCIENT OAKS...CLAUSSVILLE AROUND 425 PM... MACUNGIE...ZIONSVILLE AROUND 430 PM...EMMAUS AROUND 440 PM AND ALLENTOWN AROUND 445 PM. VERY HEAVY RAIN WILL FALL FROM THIS STORM...AND WILL CAUSE WATER TO POND ON ROADS AND QUICKLY FILL ROADSIDE DITCHES AND SMALL STREAMS. WIND GUSTS TO 40 MPH AND SMALL HAIL CAN BE EXPECTED WITH THIS STORM. FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM. DO NOT SEEK SHELTER UNDER TREES WHEN LIGHTNING THREATENS...MOVE INDOORS WHEN A THUNDERSTORM APPROACHES. FORECASTER: GORSE
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
407 PM EDT THU AUG 14 2008
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0315 PM HAIL 4 NW ALLENTOWN 40.64N 75.53W
08/14/2008 E0.50 INCH LEHIGH PA TRAINED SPOTTER
PEA TO MARBLE SIZE HAIL IN SOUTH WHITE HALL TWP.
0332 PM HAIL BETHLEHEM 40.63N 75.37W
08/14/2008 E0.25 INCH NORTHAMPTON PA TRAINED SPOTTER
PEA SIZE HAIL IN BETHLEHEM.
&&
ROBERTSONSPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 420 PM EDT THU AUG 14 2008 NJZ001-007>009-142115- HUNTERDON NJ-MORRIS NJ-SUSSEX NJ-WARREN NJ- 420 PM EDT THU AUG 14 2008 ...A STRONG THUNDERSTORM WILL AFFECT PORTIONS OF HUNTERDON...MORRIS...SUSSEX AND WARREN COUNTIES... AT 418 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A STRONG THUNDERSTORM 18 MILES SOUTH OF NEWTON...MOVING EAST AT 24 MPH. THE THUNDERSTORM WILL BE NEAR HACKETTSTOWN...LONG VALLEY AROUND 425 PM...BUDD LAKE...CHESTER AROUND 435 PM...NETCONG...STANHOPE AROUND 440 PM...SUCCASUNNA...MENDHAM AROUND 445 PM...MOUNT ARLINGTON AROUND 450 PM AND WHARTON AROUND 455 PM. WIND GUSTS TO 40 MPH, SMALL HAIL AND CLOUD TO GROUND LIGHTNING CAN BE EXPECTED WITH THIS STORM. FORECASTER: GORSE
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 430 PM EDT THU AUG 14 2008 NJZ012-013-015-142130- MERCER NJ-MIDDLESEX NJ-WESTERN MONMOUTH NJ- 430 PM EDT THU AUG 14 2008 ...A STRONG THUNDERSTORM WILL AFFECT PORTIONS OF MERCER...MIDDLESEX AND MONMOUTH COUNTIES... AT 425 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A RAPIDLY DEVELOPING THUNDERSTORM 7 MILES SOUTHEAST OF TRENTON...MOVING NORTHEAST AT 20 MPH. THE THUNDERSTORM WILL BE NEAR ALLENTOWN AROUND 435 PM...EDINBURG...CREAM RIDGE AROUND 440 PM...WINDSOR AROUND 445 PM...PRINCETON JUNCTION AROUND 450 PM...HIGHTSTOWN...ROOSEVELT...CLARKSBURG AROUND 500 PM AND TWIN RIVERS AROUND 505 PM. VERY HEAVY RAIN WILL FALL FROM THIS STORM...AND WILL CAUSE WATER TO POND ON ROADS AND QUICKLY FILL ROADSIDE DITCHES. THIS STORM WILL PRODUCE SMALL HAIL AND WIND GUSTS TO 40 MPH ALONG WITH CLOUD TO GROUND LIGHTNING. FORECASTER: GORSE
The Philadelphia radar (KDIX), 126 km away, was scanning. The volume nearest the first event began at 20:46 UTC.
1 flash flood. Local standard time, as filed.
Thunderstorms moving over the same areas of central Berks County produced flash flooding and poor drainage flooding. Creeks in Rockland Township flooded. Poor drainage flooding was reported in Reading. Doppler Radar storm total estimates reached between 5 and 6 inches in Alsace Township.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Pennsylvania in 2008Every state in 2008This day in weather historyWarnings in Pennsylvania, August 2008
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 132474.